5821971149 has 4 divisors (see below), whose sum is σ = 5822183136. Its totient is φ = 5821759164.

The previous prime is 5821971139. The next prime is 5821971157. The reversal of 5821971149 is 9411791285.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5821971149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5821971119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57359 + ... + 122204.

It is an arithmetic number, because the mean of its divisors is an integer number (1455545784).

Almost surely, 2^5821971149 is an apocalyptic number.

It is an amenable number.

5821971149 is a deficient number, since it is larger than the sum of its proper divisors (211987).

5821971149 is a wasteful number, since it uses less digits than its factorization.

5821971149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211986.

The product of its digits is 181440, while the sum is 47.

The square root of 5821971149 is about 76301.8423696309. The cubic root of 5821971149 is about 1798.9676332183.

The spelling of 5821971149 in words is "five billion, eight hundred twenty-one million, nine hundred seventy-one thousand, one hundred forty-nine".